Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SB-4109 GSC found under Switching Unit Powe by Joint Electronics Type Designation. The National Stock Number assigned to this part is 6110011106776, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SB-4109 GSC.